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    • 2. 发明授权
    • Process for reducing specific energy demand during refining of thermomechanical and chemi-thermomechanical pulp
    • 在机械和化学机械纸浆精炼期间减少比能量需求的方法
    • US08673113B2
    • 2014-03-18
    • US12797585
    • 2010-06-09
    • Rodger R. BeatsonXue Feng Chang
    • Rodger R. BeatsonXue Feng Chang
    • D21B1/14D21B1/16D21C9/16
    • D21B1/14D21B1/16D21C9/1042D21C9/1047D21C9/163
    • A method for producing thermomechanical or chemi-thermomechanical pulp is provided. The process is characterized as having a reduced specific energy demand during refining. The process involves processing a pretreated wood material using one or more high consistency refining steps to produce a first pulp, optionally applying a chelating agent to the first pulp during HC refining to produce a stabilized pulp and treating the first or stabilized pulp with an alkaline-peroxide liquor to produce a treated pulp. The treated pulp is then processed by one or more second low consistency refining steps. Alternatively, the first pulp or stabilized pulp may be divided into a primary and secondary stream. The primary stream is treated with alkaline-peroxide liquor to produce a treated pulp. The secondary stream is processed using a secondary HC refining step to produce a partially refined pulp, and removing latency of the partially refined pulp and the treated pulp is removed in a common location. The treated pulp and the partially treated pulp is processed by one or more than one second low consistency refining step to produce a final pulp. The methods utilize less energy when compared with a method for producing pulp that requires both primary and secondary high consistency refining stages.
    • 提供了一种生产热机械或化学热机械纸浆的方法。 该方法的特征在于在精炼期间具有降低的比能量需求。 该方法包括使用一个或多个高浓度精制步骤处理预处理的木材材料以产生第一纸浆,任选地在HC精炼过程中向第一纸浆施加螯合剂以产生稳定的纸浆,并用碱溶液处理第一或稳定的纸浆, 过氧化物液体以产生经处理的纸浆。 然后处理的纸浆通过一个或多个第二低浓度精制步骤进行处理。 或者,第一纸浆或稳定纸浆可以分成初级和次级流。 用碱过氧化物液处理初级流以产生经处理的纸浆。 使用二次HC精制步骤处理二次流以产生部分精制纸浆,并且在共同位置除去部分精制纸浆和经处理的纸浆的潜伏期。 经处理的纸浆和部分处理的纸浆通过一个或多于一个第二低浓度精炼步骤进行处理以产生最终纸浆。 当与需要初级和次级高浓度精炼阶段的生产纸浆的方法相比时,该方法使用较少的能量。
    • 7. 发明申请
    • METHOD AND APPARATUS FOR TREATING A CELLULOSIC FEEDSTOCK
    • 用于处理纤维素饲料的方法和装置
    • US20100024808A1
    • 2010-02-04
    • US12181666
    • 2008-07-29
    • Murray J. BurkeSunalie N. Hillier
    • Murray J. BurkeSunalie N. Hillier
    • C13K1/02
    • B01J19/18C08B1/00C12M45/02C12M45/20C12P7/10C12P2201/00C13K1/02D21B1/16D21B1/22Y02E50/16
    • A method and apparatus for pre-treating a cellulosic feedstock are disclosed. Embodiments of the method comprise conveying the cellulosic feedstock through an enclosed volume, adding moisture to the cellulosic feedstock simultaneously at multiple spaced-apart moisture injection points as the cellulosic feedstock travels through the volume, and heating the cellulosic feedstock as it travels through the volume to obtain a heated moistened feedstock. Embodiments of the apparatus comprise a shell defining a treatment chamber having a lower inner surface. The treatment chamber has an inlet and an outlet spaced longitudinally apart from the inlet to define an axial length. A conveyance member is housed within the shell and is configured to sweep the lower inner surface. A plurality of injection ports are provided in at least one of the shell and the conveyance member.
    • 公开了一种预处理纤维素原料的方法和设备。 该方法的实施方案包括通过封闭的体积输送纤维素原料,当纤维素原料穿过体积时,在多个间隔开的水分注入点同时向纤维素原料中加入水分,并且当纤维素原料通过体积时加热纤维素原料 获得加热的润湿原料。 该装置的实施例包括限定具有下内表面的处理室的外壳。 处理室具有与入口纵向间隔开的入口和出口,以限定轴向长度。 输送构件容纳在壳体内并且构造成扫掠下内表面。 在壳体和输送部件的至少一个上设置有多个喷射口。
    • 8. 发明申请
    • Chemical activation and refining of southern pine kraft fibers
    • 南方松散牛皮纸纤维的化学活化和精制
    • US20090054863A1
    • 2009-02-26
    • US12152829
    • 2008-05-16
    • Zheng TanXuan NguyenKaren L. Maurer
    • Zheng TanXuan NguyenKaren L. Maurer
    • A61F13/51D21C3/00C08B1/00
    • D21C9/007D21B1/16D21C3/006D21C3/02D21C9/002D21C9/004D21C9/1036D21C9/163Y10T428/298
    • A method for alteration of the morphology of cellulose fibers, particularly softwood fibers, by (a) subjecting the fibers to a metal ion-activated peroxide treatment carried out at a pH of between about I and about 9, preferably between 3 and 7, and (b) subjecting the treated fibers to a refining treatment thereby converts SW fibers to HW-like fibers in many respects. The metal ion-activated peroxide treatment has been noted to act on pulp cellulose and hemi-cellulose, causing oxidation and oxidative degradation of cellulose fibers. The chemical treatment of the pulp, taken alone, is not sufficient to attain the desired modification of the morphology of the fibers, however, subsequent refining or like mechanical treatment of the chemically-treated fibers to achieve a given degree of refinement of the fibers requires dramatically less refining energy to achieve a desired end point of refinement and to impart other desirable properties to the pulp. A pulp of modified SW fibers and a mixture of HW fibers and modified HW fibers are disclosed.
    • 一种改变纤维素纤维,特别是软木纤维的形态的方法,通过(a)使纤维进行在约I至约9,优选3-7之间的pH下进行的金属离子活化过氧化物处理,以及 (b)经处理的纤维进行精制处理,从而在许多方面将SW纤维转化成HW样纤维。 已经注意到金属离子活化的过氧化物处理作用于纸浆纤维素和半纤维素,引起纤维素纤维的氧化和氧化降解。 单独使用纸浆的化学处理不足以达到对纤维形态的所需改性,然而,随后的精炼或类似机械处理化学处理的纤维以达到纤维的一定程度的细化需要 显着减少精炼能量以实现期望的精制终点并赋予纸浆其它所需特性。 公开了改性SW纤维的纸浆和HW纤维和改性的HW纤维的混合物。
    • 10. 发明申请
    • Process of producing high-yield pulp
    • 生产高产量纸浆的工艺
    • US20070125507A1
    • 2007-06-07
    • US11606190
    • 2006-11-29
    • Karin WalterEva WackerbergMagnus Paulsson
    • Karin WalterEva WackerbergMagnus Paulsson
    • D21C1/02D21B1/16
    • D21B1/16D21C1/08D21C9/10
    • The present invention relates to a process for preparing a high-yield pulp comprising a) treating a lignocellulose containing material chemically by means of an oxidising system comprising at least one non-enzymatic oxidant substantially free from ozone and chlorine dioxide and an activator at a pH from about 2 to about 6.5; and b) treating the lignocellulose containing material mechanically for a time sufficient to produce a high-yield pulp, wherein the lignocellulose containing material is chemically treated prior to and/or during any mechanical treatment stage, and wherein the lignocellulose containing material is not chemically treated at a pH from about 11.5 to about 14 between stages a) and b).
    • 本发明涉及一种制备高产量纸浆的方法,其包括:a)通过氧化系统化学处理含木素纤维素的材料,所述氧化系统包含至少一种基本上不含臭氧和二氧化氯的非酶催化剂和在pH 约2至约6.5; 和b)在机械处理含木素纤维素的材料足以产生高产量纸浆的时间,其中含木素纤维素的材料在任何机械处理阶段之前和/或期间进行化学处理,并且其中含木素纤维素的材料不经化学处理 在阶段a)和b)之间的约11.5至约14的pH。